That's what I was thinking except a full collar which can fit around the pipe. Resolution would depend on how many optical sensors were fitted.(I am thinking on placing -an arc of- conventional -optical- detectors covering about a quadrant, conccentric with the pipe; this won't give you much accuracy -nor resolution- but, in exchange, is far more robust -and reliable-).
I am presuming this is a commercial operation so money should be no object, is simply replacing someone who has to watch the line along the pipe to tell when it's rotated or rotated too far.
Apart from mechanical construction, interfacing the numerous sensors, it should be easy enough to do with a Pi or a Pico. An LCD can show the pipe as that clock face described, can show the angle the line started at, where it is now, graph its changes, sound alarms, etc.
Once one has the inputs what one shows is pretty much unlimited.
Statistics: Posted by hippy — Tue Feb 13, 2024 2:10 pm